применить изменения к файлам (apply changes to files)
Использование в приложениях (Application usage)
The -R option does not work with ed scripts because there is too
little information to reconstruct the reverse operation.
The -p option makes it possible to customize a patch file to
local user directory structures without manually editing the
patch file. For example, if the filename in the patch file was:
/curds/whey/src/blurfl/blurfl.c
Setting -p 0 gives the entire pathname unmodified; -p 1 gives:
curds/whey/src/blurfl/blurfl.c
without the leading <slash>, -p 4 gives:
blurfl/blurfl.c
and not specifying -p at all gives:
blurfl.c .
